<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.fixed-box {
				position: fixed;
				right: 20px;
				bottom: 60px;
				width: 200px;
				height: 200px;
				background-color: #acacac;
			}
			
			.close {
				position: absolute;
				right: 10px;
				top: 5px;
			}
		</style>
	</head>
	<body>
		<div class="fixed-box">
			<span class="close">X</span>
			我是广告
		</div>
	</body>
</html>